230 CYCLOSTOMUS $. 8. 
Cyclostoma laevigatum Som, 'Thes. N. 49. p. 107. t. 24, f. 62. 63. *) 
-— — Chemn. ed. 1I. N. 100. p. 102. t, 13. f. 13. 14. 
92. 28: 
— Canariense Orb. Moll. Canar. p. 76. t. 2. f. 30. 
Cyclostomus laevigatus Gray Catal. Cycloph. p. 43. N. 5. 
— — Pfr. Consp. N. 334. 
Habitat in insula Teneriffa. 
371 64. €.? saeccatus Pfr. 
T. profunde rimata, vix perforata, ovato-oblonga, breviter 
truncata, tenuis, longitudinahter confertim filoso-costata, dia- 
phana, palhide cornea, maculis castaneis seriatis ornata; sutura 
profunda, sub lente spinulosa; anfr. superst. 3'/, convexi, 
ultimus antice subascendens, breviter solutus, basi saccatus; 
apertura subcireularis, basi axin excedens; perist. simplex, 
continuum, vix expansiusculum. — Operc.? — Long. 12, 
diam. 8 mill. Ap. 5 mill. longa. (Coll. Nr. 157.) 
Cyclostoma saccatum Pfr. in Proc. Zool. Soc. 9 Dec. 1851. 
— — Chemn. ed II. N. 352. t. 43. f. 33. 34. 
Cyclostomus saccatus Pfr. Counsp. N. 336. p. 64. 
Habitst ;. .2 
378 65. €.? disseetus Sowerby. 
T. perforata, oblonga, apice truncata, nitüdula, spiralhiter 
multicostata et longitudinaliter confertissime striata, albida vel 
carnea; anfr. superst. 4 convexiusculi, ultimus antice solutus, 
dorso carinatus; apertura subverticalis, ovalis; perist. liberum, 
continuum, rectum, obtusum, superne angulatum. —  Operc.? 
— Long. 15, diam. 8?/, mill. Ap. 6 mill.longa. (Mus. Cuming.) 
Cyclostoma. dissectum Som. 'Thes. N. 43. p. 105. t. 24, f. 58. 59. **) 
— E Chemn. ed IL'N. 163. p. 152; 1^ 91 $^ 17 9*7 
Cyclostomus dissectus Gray Catal. Cycloph. p. 47. N. 16. 
— — Pfr. Consp. N. 337. 
Habitat: 21.332 
*) T. subrotundata, albida, fulvo-fasciata, laevi, spira acuminatiuscula ; 
anfr. 4 rotundatis, obsoletissime transversim striatis, marginibus superne 
decurrentibus, sutura subcrenulata; apertura circulari, superne acuminata; 
peritremate tenui, minime reflexo; umbilico parvo. (Sow. l. c.) 
**) T. oblonga, apice truncato; spira aperturam paululum superante ; 
anfr. 4 rotundatis, spiraliter sulcatis et tenuissime decussatim striatis; aper- 
tura fere circulari, superne subangulata; peritremate tenui, continuo, disjuncto, 
obtuse marginato; sutura distincta, sulciformi; umbilico parvo. (Sow. l. c.) 
